Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Vicm for REFCLK in Cyclone IV GX

Hi everyone! I'm developing PCB based on CIV GX. I use schematic of "CIV GX DevKit Board" as reference. (http://www.altera.com/products/devkits/altera/kit-cyclone-iv-starter.html) Ther...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

and why the Vicm divided by two 1K res from a 2.5v source,that is 1250mv..but the handbook say VICM (AC coupled) should be 1100 ± 5%...confused...